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AD8231-EVALZ

更新时间： 2024-01-11 20:53:26
品牌 Logo 应用领域
亚德诺 - ADI 仪表放大器
页数 文件大小 规格书
24页 675K
描述
Zero Drift, Digitally Programmable Instrumentation Amplifier

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中文翻译

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AD8231-EVALZ 技术参数

是否无铅： 含铅是否Rohs认证： 符合
生命周期：Active零件包装代码：QFN
包装说明：HVQCCN, LCC16,.16SQ,25针数：16
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.31.00.01风险等级：5.73
放大器类型：INSTRUMENTATION AMPLIFIER最大平均偏置电流 (IIB)：0.005 µA
标称带宽 (3dB)：1 MHz最小共模抑制比：100 dB
最大输入失调电流 (IIO)：0.0005 µA最大输入失调电压：15 µV
JESD-30 代码：S-XQCC-N16JESD-609代码：e3
长度：4 mm湿度敏感等级：1
最大非线性：0.005%功能数量：1
端子数量：16最高工作温度：125 °C
最低工作温度：-40 °C封装主体材料：UNSPECIFIED
封装代码：HVQCCN封装等效代码：LCC16,.16SQ,25
封装形状：SQUARE封装形式：CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度（摄氏度）：260电源：3/5 V
认证状态：Not Qualified筛选级别：AEC-Q100
座面最大高度：1 mm标称压摆率：1.1 V/us
子类别：Instrumentation Amplifier最大压摆率：5 mA
供电电压上限：6 V标称供电电压 (Vsup)：5 V
表面贴装：YES温度等级：AUTOMOTIVE
端子面层：Matte Tin (Sn)端子形式：NO LEAD
端子节距：0.65 mm端子位置：QUAD
处于峰值回流温度下的最长时间：30宽度：4 mm
Base Number Matches：1

AD8231-EVALZ 数据手册

 浏览型号AD8231-EVALZ的Datasheet PDF文件第18页浏览型号AD8231-EVALZ的Datasheet PDF文件第19页浏览型号AD8231-EVALZ的Datasheet PDF文件第20页浏览型号AD8231-EVALZ的Datasheet PDF文件第22页浏览型号AD8231-EVALZ的Datasheet PDF文件第23页浏览型号AD8231-EVALZ的Datasheet PDF文件第24页 
AD8231  
APPLICATIONS INFORMATION  
The outputs of both the AD8231 in-amp and op amp are high  
impedance in the shutdown state. This feature allows several  
AD8231s to be multiplexed together without any external  
switches. Figure 54 shows an example of such a configuration.  
All the outputs are connected together and only one amplifier is  
turned on at a time. This feature is analogous to the high-Z  
mode of the digital tristate logic.  
DIFFERENTIAL OUTPUT  
Figure 53 shows how to create a differential output in-amp  
using the AD8231 uncommitted op amp. Because this  
configuration makes use of the reference terminal of the  
in-amp, errors from the op amp and resistor mismatch result in  
common-mode errors, rather than differential errors. Because  
common-mode errors are typically rejected by the next device  
in the signal chain, this circuit configuration adds almost no  
extra error.  
The resistors in the AD8231 instrumentation amplifier create a  
resistive path from the output to the reference pin of about  
100 kꢀ. If a higher output impedance in shutdown mode is  
desired, the reference pin can be driven with the op amp of  
the AD8231. In this configuration, the output impedance in  
shutdown is several GΩ, and many thousand AD8231s can  
theoretically be multiplexed in such a way.  
3
+IN  
10  
IN-AMP  
+OUT  
REF  
9
2
–IN  
4.99kΩ  
4.99kΩ  
V
REF  
The AD8231 can enter and leave shutdown mode very quickly.  
However, when the amplifier wakes up and reconnects its input  
circuitry, the voltage at its internal input nodes changes dramati-  
cally. It takes time for the output of the amplifier to settle. Refer  
to Figure 28 through Figure 32 to determine the settling time  
for different gains. This settling time limits how quickly the  
7
6
–
+
OP AMP  
8
–OUT  
Figure 53. Differential Output Using Operational Amplifier  
AD8231 can be multiplexed with the  
pin.  
SDN  
MULTIPLEXING  
USING THE AD8231 WITH BIPOLAR SUPPLIES  
SDN0  
SDN1  
SDN2  
The AD8231 can be used with bipolar supplies as long as the  
maximum voltage drop between the supply rails is kept below  
6 V and all input voltages are kept within the supply rails.  
With bipolar supplies, the acceptable levels for the digital inputs  
A0, A1, A2, , and  
shift. Table 9 shows acceptable values  
CS  
SDN  
for low and high signals for both single and dual supplies.  
Table 9. Digital Pin Thresholds  
Low  
High  
Supply Voltage (V)  
0 to 5  
0 to 3  
−2.5 to +2.5  
−1.5 to +1.5  
Min (V) Max (V) Min (V) Max (V)  
0
+1  
4
5
SDN3  
0
−2.5  
−1.5  
+0.8  
−1.5  
−0.7  
2.2  
1.5  
0.7  
3
2.5  
1.5  
Figure 54. Four AD8231s in Multiplexing Configuration  
Rev. A | Page 21 of 24  
 
 
 
 
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